This troper ''loves'' this type of characterization and has written several characters (who are Americans!) as Hot Blooded. Hell, I created a whole damn ''family'' that's Hot Blooded, the Michaels family. They are a little low-key at times, particularly the oldest son, Scott, but even he can get pretty crazy, particularly in his goal celebrations (he's a soccer/football player). There's a family in-joke that they're descended from
Irish hero Cu Chulainn--even though he's from Ulster and they're from Cork, which they're well aware of. The one that takes the Hot Blooded cake, though, is the younger brother Jimmy, who is frickin' ''nuts'' and at times gives Domon Kasshu a run for his money in terms of Hot Bloodedness. And he's a ''quarterback''!